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Dilong paradoxus
Dilong paradoxus
Published: 2015/07/30
Channel: Wiz Science™
Shapes Like Dinosaurs - Dilong Paradoxus - Jurassic Geometry
Shapes Like Dinosaurs - Dilong Paradoxus - Jurassic Geometry
Published: 2009/11/22
Channel: vans4menu
Shapes Like Dinosaurs - Dilong Paradoxus
Shapes Like Dinosaurs - Dilong Paradoxus
Published: 2015/05/23
Channel: Tappy Danski
dilong paradoxus - Dinosaur Names 🔊☄
dilong paradoxus - Dinosaur Names 🔊☄
Published: 2017/12/01
Channel: See Hear Say Learn
KAITONG. Буровые инструменты для гнб установок Vermeer, Ditch Witch, XCMG, Hunlyma, Dilong DDW
KAITONG. Буровые инструменты для гнб установок Vermeer, Ditch Witch, XCMG, Hunlyma, Dilong DDW
Published: 2017/04/07
Channel: Евгения Акишина
Review 68: Carnegie Dilong
Review 68: Carnegie Dilong
Published: 2015/07/02
Channel: Matthew The Dinosaur King
How to Draw a Dilong
How to Draw a Dilong
Published: 2012/01/28
Channel: www123peppy
Safari Ltd. (carnegie collection) Dilong
Safari Ltd. (carnegie collection) Dilong
Published: 2014/09/27
Channel: SpinoAcroTaurus
Juratyrant - Video Learning - WizScience.com
Juratyrant - Video Learning - WizScience.com
Published: 2015/09/04
Channel: Wiz Science™
Mammals Vs Dinos Dilong Feathered Hunters
Mammals Vs Dinos Dilong Feathered Hunters
Published: 2014/03/06
Channel: Science Tin
【Velociraptor ・Dilong 】
【Velociraptor ・Dilong 】
Published: 2015/09/24
Channel: Goo Soo
Shapes Like Dinosaurs - Voices Rant On
Shapes Like Dinosaurs - Voices Rant On
Published: 2016/05/14
Channel: fun dosh
Dinosaur Of The Day Episode 4! "Dilong" HARDCORE EDITION!!
Dinosaur Of The Day Episode 4! "Dilong" HARDCORE EDITION!!
Published: 2012/08/29
Channel: DinosaurOfTheDay
My drawings, Episode II part 3 : Cretaceous #1
My drawings, Episode II part 3 : Cretaceous #1
Published: 2016/09/02
Channel: RaptorGorilla
Делаем дилун
Делаем дилун
Published: 2017/11/26
Channel: Sasha My
Dryptosaurus - Video Learning - WizScience.com
Dryptosaurus - Video Learning - WizScience.com
Published: 2015/08/04
Channel: Wiz Science™
Microraptor - Video Learning - WizScience.com
Microraptor - Video Learning - WizScience.com
Published: 2015/08/02
Channel: Wiz Science™
Walking with Dinosaurs 3D play surprise bag of extracting dinosaur
Walking with Dinosaurs 3D play surprise bag of extracting dinosaur
Published: 2014/11/21
Channel: Dino Channel
Styracosaurus facts
Styracosaurus facts
Published: 2014/09/24
Channel: 1Glenbervie
Brave Season - "Waking"
Brave Season - "Waking"
Published: 2015/06/01
Channel: Face of Radio Media
Daisyfoot - but i owe half of myself to you
Daisyfoot - but i owe half of myself to you
Published: 2015/06/05
Channel: emoviolence03
One-Ton
One-Ton 'Feathered' Dinosaur?
Published: 2012/04/28
Channel: Dave Flang
Deter Responds to Evolution Hoaxes, and other stuff
Deter Responds to Evolution Hoaxes, and other stuff
Published: 2015/03/30
Channel: Deterlucem
Before Flowering Plants
Before Flowering Plants
Published: 2016/06/10
Channel: Smithsonian's National Museum of Natural History
DILONE EN NEW YORK.MOV
DILONE EN NEW YORK.MOV
Published: 2010/03/10
Channel: JUAN DILONE
Shapes LIke Dinosaurs- I Am a Clever Wordsmith / Cloud Watching
Shapes LIke Dinosaurs- I Am a Clever Wordsmith / Cloud Watching
Published: 2009/04/22
Channel: shapeslikedinosaurs
PARADOXUS EN MEXICO
PARADOXUS EN MEXICO
Published: 2012/03/17
Channel: churrumaisknlimoncit
Teropods Tribute -Keys To The Kingdom
Teropods Tribute -Keys To The Kingdom
Published: 2017/02/24
Channel: Екатерина М.
ParadoXus—Smells Like Teen Spirit
ParadoXus—Smells Like Teen Spirit
Published: 2012/06/08
Channel: Jorge Andrés Cancino Carrión
Dinosaur feathers in amber
Dinosaur feathers in amber
Published: 2016/12/08
Channel: SciNews
Paradoxus - a sua maneira (live)
Paradoxus - a sua maneira (live)
Published: 2006/12/17
Channel: psychochadpepper
Brave Season "AC Running"
Brave Season "AC Running"
Published: 2015/06/01
Channel: Face of Radio Media
Albertosaurus facts
Albertosaurus facts
Published: 2014/09/24
Channel: 1Glenbervie
Shapes Like Dinosaurs - Cotton Candy
Shapes Like Dinosaurs - Cotton Candy
Published: 2009/11/23
Channel: CloseUrEyesNListen
idinoNoMore (copy)- Dinosaur Soft Tissue Mark Armitage
idinoNoMore (copy)- Dinosaur Soft Tissue Mark Armitage
Published: 2014/12/12
Channel: DIOS NO ES SECRETO
Raptorex - Video Learning - WizScience.com
Raptorex - Video Learning - WizScience.com
Published: 2015/08/02
Channel: Wiz Science™
Shapes Like Dinosaurs- Kitten-Can-Noodle teaser
Shapes Like Dinosaurs- Kitten-Can-Noodle teaser
Published: 2010/01/06
Channel: shapeslikedinosaurs
Shapes Like Dinosaurs 2/6/10 @ Magic City Wholesale
Shapes Like Dinosaurs 2/6/10 @ Magic City Wholesale
Published: 2010/02/09
Channel: pbailey504
Oldest Feathered Dinosaur Fossil Found
Oldest Feathered Dinosaur Fossil Found
Published: 2013/05/31
Channel: GeoBeats News
ShapesLikeDinosaurs - Dinostomping Pts. I-IV
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Published: 2009/11/10
Channel: spentswimmer
Sailor Ghost - High Seas for Poor Sailor Pt. III
Sailor Ghost - High Seas for Poor Sailor Pt. III
Published: 2015/06/03
Channel: emoviolence03
Shapes Like Dinosaurs - I Believe You Are In League With the Butcher
Shapes Like Dinosaurs - I Believe You Are In League With the Butcher
Published: 2011/08/03
Channel: Hip420Music
Actarus - Pao De Queijo
Actarus - Pao De Queijo
Published: 2010/04/14
Channel: vans4menu
Shapes Like Dinosaurs "Marisupals 2"
Shapes Like Dinosaurs "Marisupals 2"
Published: 2013/12/02
Channel: Schmohawk Jabroni
Shapes Like Dinosaurs - Gin Phantoms
Shapes Like Dinosaurs - Gin Phantoms
Published: 2015/05/23
Channel: Tappy Danski
Shapes Like Dinosaurs- Puddled Out
Shapes Like Dinosaurs- Puddled Out
Published: 2015/09/29
Channel: Shapes Like Dinosaurs
Lunch Box @ Project Nuotaku (World)
Lunch Box @ Project Nuotaku (World)
Published: 2011/10/16
Channel: ray-an posadas
Shapes Like Dinosaurs-Cotton Candy Live @ The American Dream House
Shapes Like Dinosaurs-Cotton Candy Live @ The American Dream House
Published: 2013/06/20
Channel: Ernest0wTruck
Brave Season - "Junior Varsity"
Brave Season - "Junior Varsity"
Published: 2015/06/01
Channel: Face of Radio Media
Fossil Immortalizes Ancient Insect
Fossil Immortalizes Ancient Insect's Leaf Mimicry
Published: 2017/06/24
Channel: 21 News
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Dilong paradoxus
Temporal range: Early Cretaceous, 126 Ma
Dilong.jpg
Original fossil specimen
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Theropoda
Superfamily: Tyrannosauroidea
Genus: Dilong
Xu et al., 2004
Species: D. paradoxus
Binomial name
Dilong paradoxus
Xu et al., 2004

Dilong (帝龍, which means 'emperor dragon') is a genus of basal tyrannosauroid dinosaur.[1] The only species is Dilong paradoxus. It is from the Lower Cretaceous Yixian Formation near Lujiatun, Beipiao, in the western Liaoning province of China. It lived about 126 million years ago.[2]

Discovery[edit]

Dilong was described by Xu Xing and colleagues in 2004.[3] The name is derived from the Chinese meaning 'emperor' and 龙 / 龍 lóng meaning 'dragon'. "Di", "emperor", refers to the relationship of this animal to Tyrannosaurus rex, the "king" tyrannosaurid. "Long" is used to name Chinese dinosaurs in much the same way that the Latin -saur(us) is in the West. The specific name, paradoxus, is a Latinisation of the Ancient Greek παράδοξον meaning 'against received wisdom'.

Description[edit]

Size comparison between Dilong and a human.

The type specimen is IVPP 14243 (Institute of Vertebrate Paleontology and Paleoanthropology in Beijing), a nearly complete, semi-articulated, skull and skeleton. Referred material includes IVPP 1242, a nearly complete skull and presacral vertebrae, TNP01109 (Tianjin Museum of Natural History), a partial skull, and IVPP V11579, another skull which may belong to D. paradoxus, or to a related species. The type specimen of Dilong was about 1.6 m (5.2 ft) in length, but it is thought to be a juvenile and may have been over 2 m (6.6 ft) long when fully grown.

Feathers[edit]

Dilong paradoxus had a covering of simple feathers or protofeathers. The feathers were seen in fossilized skin impressions from near the jaw and tail. They are not identical to modern bird feathers, lacking a central shaft and most likely used for warmth, since they could not have enabled flight. Adult tyrannosaurs, found in Alberta and Mongolia have skin impressions which appear to show the pebbly scales typical of other dinosaurs. Xu et al. (2004) speculated that the tyrannosauroids may have had different skin coverings on different parts of their bodies - perhaps mixing scales and feathers. They also speculated that feathers may correlate negatively with body size - that juveniles may have been feathered, then shed the feathers and expressed only scales as the animal became larger and no longer needed insulation to stay warm.

Classification[edit]

Life restoration.
Reconstructed skeleton

When Dilong was first described, it was considered one of the earliest and most primitive members of Tyrannosauroidea, the group that includes the later, larger tyrannosaurids such as Tyrannosaurus rex. At least one later study, by Turner and colleagues in 2007, reanalyzed the relationships of coelurosaurian dinosaurs, including Dilong, and found that it was not a tyrannosauroid. Rather, they placed Dilong two steps above the tyrannosauroids in their phylogeny; more advanced than Coelurus, but more primitive than the Compsognathidae.[4] However, other studies continued to find Dilong as a tyrannosauroid, and some (such as Carr & Williamson 2010) found Dilong to fall within Tyrannosauroidea, not among the more advanced coelurosaurs.[5]

Below is a cladogram containing most tyrannosauroids by Loewen et al. in 2013.[6]

Tyrannosauroidea
Proceratosauridae


Proceratosaurus bradleyi



Kileskus aristotocus



Guanlong wucaii





Sinotyrannus kazuoensis




Juratyrant langhami



Stokesosaurus clevelandi







Dilong paradoxus




Eotyrannus lengi




Bagaraatan ostromi




Raptorex kriegsteini




Dryptosaurus aquilunguis





Alectrosaurus olseni



Xiongguanlong baimoensis





Appalachiosaurus montgomeriensis





Alioramus altai



Alioramus remotus




Tyrannosauridae











In a 2014 study, Dilong was found to be a proceratosaurid.[1] However, in an analysis by Brusatte et al. in 2016, both parsimony and Bayesian phylogenetic analyses placed Dilong outside of Proceratosauridae, as a slightly more advanced tyrannosauroid.[7]

See also[edit]

References[edit]

  1. ^ a b Juan D. Porfiri; Fernando E. Novas; Jorge O. Calvo; Federico L. Agnolín; Martín D. Ezcurra; Ignacio A. Cerda (2014). "Juvenile specimen of Megaraptor (Dinosauria, Theropoda) sheds light about tyrannosauroid radiation". Cretaceous Research. 51: 35–55. doi:10.1016/j.cretres.2014.04.007. 
  2. ^ Chang, S.-C.; Gao, K.-Q.; Zhou, Z.-F.; Jourdan, F. (2017). "New chronostratigraphic constraints on the Yixian Formation with implications for the Jehol Biota". Palaeogeography, Palaeoclimatology, Palaeoecology. 487: 399–406. doi:10.1016/j.palaeo.2017.09.026. 
  3. ^ Xu, X.; Norell, M. A.; Kuang, X.; Wang, X.; Zhao, Q.; Jia, C. (2004). "Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids" (PDF). Nature. 431 (7009): 680–684. doi:10.1038/nature02855. PMID 15470426. 
  4. ^ Turner, A.H., Pol, D., Clarke, J.A., Erickson, G.M., and Norell, M. (2007). "Supporting online material for: A basal dromaeosaurid and size evolution preceding avian flight". Science, 317: 1378-1381. doi:10.1126/science.1144066 (supplement)
  5. ^ Carr T.D.; Williamson T.E. (2010). "Bistahieversor sealeyi, gen. et sp. nov., a new tyrannosauroid from New Mexico and the origin of deep snouts in Tyrannosauroidea". Journal of Vertebrate Paleontology. 30 (1): 1–16. doi:10.1080/02724630903413032. 
  6. ^ Loewen, M.A.; Irmis, R.B.; Sertich, J.J.W.; Currie, P. J.; Sampson, S. D. (2013). Evans, David C, ed. "Tyrant Dinosaur Evolution Tracks the Rise and Fall of Late Cretaceous Oceans". PLoS ONE. 8 (11): e79420. doi:10.1371/journal.pone.0079420. PMC 3819173Freely accessible. PMID 24223179. 
  7. ^ Brusatte, Stephen L.; Carr, Thomas D. (2016-02-02). "The phylogeny and evolutionary history of tyrannosauroid dinosaurs". Scientific Reports. 6 (1). doi:10.1038/srep20252. ISSN 2045-2322. 

External links[edit]

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